结构段

For bulk cylinder-forming diblock copolymers, a series of novel structures such as helices and stacked toroids are identified which cannot form in bulk block copolymers.

对体相形成柱状相的双嵌段共聚物，在不同孔径的孔内我们观察到了一系列体相不存在的螺旋和层叠圆环等新奇结构。

Strippers of 2 or 3 piece construction are to have 2 balanced ?

两到三段的脱料板结构应该由2 平衡的方便起吊螺丝的？

The result of experiment and testing prove that the model can find how to identify the new Spams by learning from the field , network , structure and content informations of emails. It shows that our model and method work well.

实验证明，该模型能从邮件结构字段信息和邮件正文信息中，学习归纳出能识别垃圾邮件的知识和方法，表明本文提出的基于决策树理论的邮件分类模型是可行和有效的，并具有良好的效果。

It is demonstrated that a new maintenance system is necessary. The operating mode, crew rostering system, maintenance regulations and procedures are proposed. Also proposed are the formulae to calculate the ration of the number of trains, amount of repair work, repair lines at a workshop, as well as parking lines. A scheme for the workshop structures of a repair ...

阐明了高速列车具有全新的运用检修模式；提出了高速列车的运行方式、乘务制度、检修制度、工艺流程，以及高速动车组配属数量、检修工作量、检修库线、存车线的设计计算方法与计算公式；给出了高速动力段主检修库厂房结构的推荐方案。

Objective To acquire enough envelope glycoproteins so as to facilitate a further study of the structure and function of envelope glycoproteins from various kinds of virus isolates. Methods Two envelope glycoprotein gene fragments were cloned from the recombinant plasmid pHXB2 containing the human immunodeficiency virus 1(HIV-1) proviral genome of HXB2 isolate.

目的 获得足够量的膜糖蛋白，以便于对不同HIV分离株膜糖蛋白的结构与功能进行进步的研究方法从人免疫缺陷病毒1(HIV-1)HXB2分离株原病毒基因组的重组质粒pHXB2中克隆了两段膜糖蛋白基因片段。

In the dissertation, a new stabilization method, equal-density method was adopted to prepare modified asphalts with storage stability at high temperature. In this method, a compound was prepared by premixing polymer and filler, and the compound was mixed with asphalt to prepare Polymer-Modified Asphalt by changing the ratio of polymer and filler. The asphalts with good storage stability were formed with the addition of filler, by regulating the density difference between polymer and asphalt. With identifying the effect of composition factor and the technique conditions on mechanical properties of polymer/filler compound and the molecular distribution of the polymer, identifying the effect of composition factor and the technique conditions on the properties and structure of polymer/filler modified asphalt, Styrene-Butadiene-Styrene copolymer, Low Density PolyEthylene, Styrene-Ethylene-Butadiene-Styrene block copolymer modified asphalts with good storage stability and performance were prepared. Rheological method, gel content analysis and swelling measurement were adopted to elucidate the interaction between the polymer and filler. Filler reduced the difference between the polymer and asphalt with the premixing technique, which led to the improvement of the storage stability of the modified asphalts. The thermo-oxidative aging process of base asphalt and PMA were studied and the effect of antioxidant additives on the base asphalt and PMA were analyzed.

本论文采用等密度方法，即预先混合聚合物与填料制备复合物，复合物在沥青中会吸收油份而溶胀，改变填料的用量从而调节聚合物与沥青的密度差异的方法，制备出高温贮存稳定的改性沥青，并研究了工艺条件和配方因素对聚合物/填料复合物力学和聚合物分子量分布的影响，系统考察了工艺条件和配方因素对聚合物/填料改性沥青性能与形态结构的影响，研制出性能优良、高温贮存稳定的苯乙烯-丁二烯-苯乙烯三嵌段共聚物、氢化SBS、低密度聚乙烯改性沥青，并通过流变学分析方法及凝胶和溶胀测试探讨了聚合物与填料的相互作用，指出经过预混工艺填料改变了聚合物与沥青的密度差异，以此说明聚合物/填料改性沥青高温贮存稳定的原因；研究了基质沥青和聚合物改性沥青热氧老化过程，并分析了抗氧剂对基质沥青及聚合物改性沥青的影响，探讨了抗氧剂提高沥青耐老化性能的原因。

Education is a long process that not only provides us with basic skills such as literacy and numeracy, but is

这篇文章是英国人写的雅思范文，和我们看到的剑桥样题一样，属于平衡式，四段结构，逻辑和措辞都很不错。

Using this model, dynamic responses of track structure when train passing through rail joints and transitions are investigated.

利用该模型对列车经过错牙和路桥过渡段时轨道结构的动力响应进行了分析，计算结果为既有线提速和新线建设提供设计依据。

So, some countermeasures should be taken. New drilling technologies will be introduced including wash boring and micro -foam drilling. High-calcium salt polymer drill fluid with strong inhabit will be used in drilling, whose density should be adjusted according to the situation. Bore frame should be adjusted, that is to say, the pressure has few differences at one whole barefoot interval and density of the drill fluid should be big enough before drilling.

对此，提出如下治理对策：采用新的钻井工艺，引进清水强钻和微泡沫钻并技术；钻井中使用强抑制性高钙盐聚合物钻井液，并合理调整其密度大小；调整井身结构，在一个裸眼井段内不能有压力悬殊的地层存在，在揭开储层前，应适当提高钻井液密度。

This paper examines the cracks appeared in the retaining wall beside the FeiYuze tunnel uplink secondary lining vault. The seismic CT technology was used to investigate the engineering geology structure of the covering rock mass above the tunnel. The results indicate that the rock mass had three fracture zones along tunnel axial and the rock mass quality in the small mileage entrance section was poor.

针对飞鱼泽隧道的上行线二衬拱顶靠档墙处出现裂缝，经地震CT技术查清隧道上所覆盖岩体的工程地质结构结果表明，沿隧道轴向存在三个岩体破碎带，其中在小里程入口段，岩体完整性较差。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。